SHOWA 37 mm Outer Fork Bushing (OEM) for HONDA CR 80, CR 85, CRF 150, CRF 230, XL 500, XR 250 and SUZUKI RM 85 1981-2026

The SHOWA SHO-51037 outer fork bushing is designed for HONDA CR 80, CR 85, CRF 150, CRF 230, XL 500, XR 250 and SUZUKI RM 85 from 1981 to 2026. The outer fork bushing (guide bushing) is fitted at the top of the fork leg, under the oil seal: together with the inner fork bushing (slide bushing), it guides the sliding of the fork. Its PTFE (Teflon) coating reduces friction; once worn, the bronze shows through, the fork binds and the oil seals wear out faster.

Specifications

• Brand: SHOWA
• Manufacturer part number: SHO-51037
• Guide bushing fitted in the outer tube (PTFE-coated inside)

When to replace it?

• Grey coating worn through: the copper or bronze shows on the bushing.
• Play in the fork when you rock the bike back and forth with the front brake on.
• Fork that binds at the start of its stroke, oil seals that leak again and again.

Check the bushings every time you replace the oil seals or change the fork oil. Replace them as soon as the bronze shows over more than a quarter of their surface.

Fitting tips

1. Disassemble the fork leg following the manual and separate the outer tube from the inner tube.
2. Remove the old bushing without scratching its seat, and clean the seat.
3. Fit the new bushing with a suitable tool (or using the old bushing as a driver), then install new oil seals.
4. Reset the fork oil level as per the manual.

Why SHOWA?

Showa was founded in 1938 in Gyoda, Japan, as Showa Aircraft Precision Works. After the war, the company put its aeronautical know-how to work on motorcycle suspension, notably for Honda, and the brand now belongs to the Astemo group, formed by a merger completed in January 2021.

Spare parts and items to plan

• Fork oil seals : ATHENA P40FORK455042 · ATHENA P40FORK455143
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork dust seals : ATHENA

Frequently asked questions

Do I have to change both bushings?
Check the outer and inner bushings on both legs: they wear together. Replace all those that show bronze.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
HONDA CR 80 2002
HONDA CR 80 2001
HONDA CR 80 2000
HONDA CR 80 1999
HONDA CR 80 1998
HONDA CR 80 1997
HONDA CR 80 1996
HONDA CR 85 2007
HONDA CR 85 2006
HONDA CR 85 2005
HONDA CR 85 2004
HONDA CR 85 2003
HONDA CR 85 2002
HONDA CR 85 2001
HONDA CR 85 2000
HONDA CR 85 1999
HONDA CR 85 1998
HONDA CR 85 1997
HONDA CR 85 1996
HONDA CRF 150 2026
HONDA CRF 150 2025
HONDA CRF 150 2024
HONDA CRF 150 2023
HONDA CRF 150 2022
HONDA CRF 150 2021
HONDA CRF 150 2020
HONDA CRF 150 2019
HONDA CRF 150 2018
HONDA CRF 150 2017
HONDA CRF 150 2016
HONDA CRF 150 2015
HONDA CRF 150 2014
HONDA CRF 150 2013
HONDA CRF 150 2012
HONDA CRF 150 2011
HONDA CRF 150 2010
HONDA CRF 150 2009
HONDA CRF 150 2008
HONDA CRF 150 2007
HONDA CRF 230 2010
HONDA CRF 230 2009
HONDA CRF 230 2008
HONDA CRF 230 2007
HONDA CRF 230 2006
HONDA CRF 230 2005
HONDA CRF 230 2004
HONDA CRF 230 2003
HONDA XL 500 1986
HONDA XL 500 1985
HONDA XL 500 1984
HONDA XL 500 1983
HONDA XL 500 1982
HONDA XL 500 1981
HONDA XR 250 1982
HONDA XR 250 1981
SUZUKI RM 85 2022
SUZUKI RM 85 2021
SUZUKI RM 85 2020
SUZUKI RM 85 2019
SUZUKI RM 85 2018
SUZUKI RM 85 2017
SUZUKI RM 85 2016
SUZUKI RM 85 2015
SUZUKI RM 85 2014
SUZUKI RM 85 2013
SUZUKI RM 85 2012
SUZUKI RM 85 2011
SUZUKI RM 85 2010
SUZUKI RM 85 2009
SUZUKI RM 85 2008
SUZUKI RM 85 2007
SUZUKI RM 85 2006
SUZUKI RM 85 2005
SUZUKI RM 85 2004
SUZUKI RM 85 2003
SUZUKI RM 85 2002